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Jake Soderberg - Homework 2.3 - Statistics With Excel - Dunwoody College of Technology
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Jake Soderberg - Homework 2.3 - Statistics With Excel - Dunwoody College of Technology

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  • 1. Jake Soderberg Dunwoody College of Technology QUAL 225 Statistics with Excel Tuesday, January 19, 2010 Homework 2.3 Questions 3, 5, 11, 13, 15 (excel direction pg 91) 3. Internet connection, construct a Pareto chart and a horizontal bar graph Location Number of Computers Homes 240 Small companies 102 300 Number of Computers Large companies 148 250 Government agencies 33 200 Schools 47 150 Location Number of Computers 100 Homes 240 50 Large companies 148 Small companies 102 0 Schools 47 Government agencies 33 Sorted based on frequency 5. World Energy Use, construct a Pareto chart and a vertical bar graph Source of Energy Percent Usage Petroleum 39.8% Coal 23.2% 45.0% Dry natural gas 22.4% 40.0% Hydroelectric 7.0% 35.0% Percent Usage 30.0% Nuclear 6.4% 25.0% Other (wind, solar, etc.) 1.2% 20.0% 15.0% 10.0% 5.0% 0.0% 7. Average Global Temperatures, construct a time series graph Period of Time Average Global Temps 1900-09 56.5 1910-19 56.6 1920-29 56.7 1930-39 57.0 1940-49 57.1 1950-59 57.1
  • 2. 1960-69 57.1 1970-79 57.0 1980-89 57.4 1990-99 57.6 11. Characteristics of the Population 65 and Over, construct a pie graph Marital status Never Married 3.9% 14.04 Degrees Married 57.2% 205.92 Degrees Widowed 30.8% 110.88 Degrees Divorced 8.1% 29.16 Degrees Total n = 100.0% 360.00 Degrees Educational attainment Less than ninth grade 13.9% 50.04 Degrees Completed 9-12 but no diploma 13.0% 46.8 Degrees H.S. graduate 36.0% 129.6 Degrees Some college/associates degree 18.4% 66.24 Degrees Bachelor's/advanced degree 18.7% 67.32 Degrees Total n = 100.0% 360 Degrees 13. Workers Switch Jobs, construct a pie graph and a Pareto chart Would like a career change 34% 122.4 Degrees Want a new job in same industry 29% 104.4 Degrees Start a business 21% 75.6 Degrees Are going to retire 16% 57.6 Degrees Total n = 100% 360 The pie graph better represents the data 15. Presidents' Ages at Inaguration, construct a stem and leaf plot and analyze the data 57 54 52 55
  • 3. 61 68 56 55 57 51 46 54 57 49 54 42 58 64 49 51 57 48 50 56 61 65 47 55 Stem Leaf Plot Leading digit (stem) Trailing digit (leaf) 4 23 4 667899 5 011112244444 5 555566677778 6 01112 6 44589 Group Frequency Distribution Class limits 42 46 42-46 41.5 47 51 47-51 46.5 52 56 52-56 51.5 57 61 57-61 56.5 62 66 62-66 61.5 67 71 67-71 66.5 Histogram Bin Frequency Cumulative % 41.5 0 0.00% 46.5 4 9.52% 51.5 9 30.95% 56.5 14 64.29% 61.5 9 85.71% 66.5 4 95.24% 71.5 2 100.00% More 0 100.00%
  • 4. Cumulative Frequency Distribution 41.5 Less than 41.5 0 46.5 Less than 46.5 4 51.5 Less than 51.5 13 56.5 Less than 56.5 27 61.5 Less than 61.5 36 66.5 Less than 66.5 40 71.5 Less than 71.5 42
  • 5. Pareto Chart 300 250 Location 200 150 100 50 0 Homes Large companies Small companies Schools Government agencies Location Pareto Chart 45.0% 40.0% 35.0% 30.0% Percent Usage 25.0% 20.0% 15.0% 10.0% 5.0% 0.0% Petroleum Coal Dry natural gas Hydroelectric Nuclear Other (wind, solar, etc.) Source of Energy Time Series Graph 57.8 57.6 57.4 Period of Time 57.2 57.0 56.8 56.6 56.4
  • 6. Period of Time 56.4 56.2 56.0 55.8 Average Global Temperatures Pie Graph (marital status) Never Married 4% Divorced 8% Widowed 31% Married 57% Pareto Chart 40% Percent With Career Change Plans 35% 30% 25% 20% 15% 10% 5% 0% Would like a career Want a new job in same Start a business Are going to retire change industry Career Change Plans 51 56
  • 7. 54 61 51 52 60 69 62 64 43 46 55 54 Group Frequency Distribution Class boundaries Frequency Class Width Class midpoint Cum Freq 46.5 41.5-46.5 4 5 44 4 51.5 46.5-51.5 9 5 49 13 56.5 51.5-56.5 14 5 54 27 61.5 56.5-61.5 9 5 59 36 66.5 61.5-66.5 4 5 64 40 71.5 66.5-71.5 2 69 42 Total 42 Histogram 15 Frequency 10 5 0 41.5 46.5 51.5 56.5 61.5 66.5 71.5 More Presidents Age at Inaguration (Bin) Frequency Polygon 16 14 12 Frequency 10 8 6 4
  • 8. 4 2 0 44 49 54 59 64 69 Presidents Age at Inaguration (Midpoint) Ogive 45 40 Cumulative Frequency 35 30 25 20 15 10 5 0 41.5 46.5 51.5 56.5 61.5 66.5 71.5 Presidents Age at Inaguration (Class Boundaries)
  • 9. Schools Government agencies Location Large companies Small companies Homes 0 50 100 150 200 250 300 Number of Computers Vertical Bar Graph 45.0% 40.0% 35.0% Percent Usage 30.0% 25.0% 20.0% 15.0% 10.0% 5.0% 0.0% Petroleum Coal Dry natural gas Hydroelectric Nuclear ther (wind, solar, etc.) O Source of Energy
  • 10. Pie Graph (education attainment) Bachelor's/advancedLess than ninth grade degree 14% 19% Completed 9-12 but no diploma Some 13% college/associates degree 18% H.S. graduate 36% Pie Graph Are going to retire 16% Would like a career change Start a business 34% 21% Want a new job in e going to retire same industry 29%

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